Why did my "Receiving Call" Display changed..?

[AC Question]

I'm using an Asus Zenfone 2..
Don't know what happened though..
But somehow when I got a call, the display changed to
a small display placed on top of the screen instead widely open all over the screen.

Please help me, can't figure it out what happened..

 

[B. Diddy]

Welcome to Android Central! Can you show us a screenshot? http://forums.androidcentral.com/am...ide-how-post-screenshots-android-central.html

 

[supkam]

Update your device with latest FOTA version
Go to settings => Apps => select the Asus calling screen app=>
Force Stop the app => Select Clear Cache and data => uninstall updates=>Restart phone=>reinstall the app.